160 psi is what compression ratio

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09-05-2003, 11:58 PM

FlyFast

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160 psi is what compression ratio

My vortec sbc 355 has 160 psi compression. what does this work out to? Is it about 9 to 1?

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Just trying to guess horsepower

09-06-2003, 01:27 PM

220BR

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Its not thet easy. The intake closing point on your cam has a lot to do with it. If its a stock marine cam, then yes, anywhere from about 8.8 to 9.3 static compression would be my guess.

09-07-2003, 10:07 AM

formula31

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Yea, like he siad. Cam overlap and timing really affects cranking compression.

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